remove deferred

src/helpers/deferred.test.ts

@@ -1,14 +0,0 @@
-import { createDeferred } from "./deferred"
-
-test("resolve", async () => {
-  const deferred = createDeferred<string>()
-  setTimeout(() => deferred.resolve("hi"))
-  expect(await deferred).toBe("hi")
-})
-
-test("reject", async () => {
-  const deferred = createDeferred()
-  const error = new Error("oops")
-  setTimeout(() => deferred.reject(error))
-  await expect(deferred).rejects.toThrow(error)
-})

src/helpers/deferred.ts

@@ -1,21 +0,0 @@
-// eslint-disable-next-line import/no-unused-modules
-export type Deferred<T> = PromiseLike<T> & {
-  resolve: (value: T | PromiseLike<T>) => void
-  reject: (reason?: unknown) => void
-}
-
-export function createDeferred<T = void>(): Deferred<T> {
-  let resolve: (value: T | PromiseLike<T>) => void
-  let reject: (reason?: unknown) => void
-
-  const promise = new Promise<T>((_resolve, _reject) => {
-    resolve = _resolve
-    reject = _reject
-  })
-
-  return {
-    then: promise.then.bind(promise),
-    resolve: (value) => resolve(value),
-    reject: (reason) => reject(reason),
-  }
-}